78900212 has 24 divisors (see below), whose sum is σ = 144619776. Its totient is φ = 37593248.

The previous prime is 78900203. The next prime is 78900221. The reversal of 78900212 is 21200987.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78900203) and next prime (78900221).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25493 + ... + 28419.

It is an arithmetic number, because the mean of its divisors is an integer number (6025824).

Almost surely, 2^78900212 is an apocalyptic number.

It is an amenable number.

78900212 is a deficient number, since it is larger than the sum of its proper divisors (65719564).

78900212 is a wasteful number, since it uses less digits than its factorization.

78900212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247 (or 3245 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 78900212 is about 8882.5791299599. The cubic root of 78900212 is about 428.9033022839.

The spelling of 78900212 in words is "seventy-eight million, nine hundred thousand, two hundred twelve".